Sensitivity of three-segment electrodiffusion probes to eddy shedding

✍ Scribed by V. Sobolik; J. Tihon; J. Pauli; U. Onken

• Publisher: Springer
• Year: 1994
• Tongue: English
• Weight: 561 KB
• Volume: 16
• Category: Article
• ISSN: 0723-4864
• DOI: 10.1007/bf00202060

✦ Synopsis

The influence of eddy shedding on the instantaneous readings of a three-segment cylindrical electrodiffusion velocity probe was investigated in an immersed jet with a very low turbulence intensity, a--1.2%. The velocity fluctuations measured by the three-segment probe were smaller than 2.6%, and the maximum error in the flow angle estimation was z ~ Vortices with the Strouhal frequency were detected by a simple electrodiffusion probe placed downstream of the three-segment probe, but no peaks with this frequency were found on the frequency spectra of the three-segment probe. From the probe response to a stepwise change of the polarization voltage the characteristic times of the transient process were estimated.